package com.zy.oauth.controller;

import com.google.code.kaptcha.Producer;
import com.zy.common.core.R;
import com.zy.common.core.constant.CacheConstants;
import com.zy.common.core.constant.Constants;
import com.zy.common.redis.RedisUtils;
import com.zy.common.utils.sign.UUID;
import com.zy.common.utils.sign.Base64;
import io.swagger.annotations.Api;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.FastByteArrayOutputStream;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;
import javax.imageio.ImageIO;
import javax.servlet.http.HttpServletResponse;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

/**
 * 验证码操作处理
 */
@Api(tags = "贼拉牛逼验证码", value = "贼拉牛逼验证码")
@RestController
public class CaptchaController {
    @Resource(name = "captchaProducer")
    private Producer captchaProducer;

    @Resource(name = "captchaProducerMath")
    private Producer captchaProducerMath;

    @Autowired
    private RedisUtils redisUtils;

    /**
     * 生成验证码
     */
    @GetMapping("/captchaImage")
    public Object getCode(HttpServletResponse response) throws IOException {
        R r = R.ok();

        //TODO 验证码开关待完善
//        boolean captchaEnabled = configService.selectCaptchaEnabled();
//        if (!captchaEnabled) {
//            return R.fail(ErrorEnums.GET_VERIFICATION_CODE_ERROR);
//        }

        // 保存验证码信息
        String uuid = UUID.randomUUID().toString(true);
        String verifyKey = CacheConstants.CAPTCHA_CODE_KEY + uuid;

        String capStr = null, code = null;
        BufferedImage image = null;

        // 生成验证码
        // String captchaType = RuoYiConfig.getCaptchaType();
        String captchaType = "char";
        if ("math".equals(captchaType)) {
            String capText = captchaProducerMath.createText();
            capStr = capText.substring(0, capText.lastIndexOf("@"));
            code = capText.substring(capText.lastIndexOf("@") + 1);
            image = captchaProducerMath.createImage(capStr);
        } else if ("char".equals(captchaType)) {
            capStr = code = captchaProducer.createText();
            image = captchaProducer.createImage(capStr);
        }

        redisUtils.setCacheObject(verifyKey, code, Constants.CAPTCHA_EXPIRATION, TimeUnit.MINUTES);
        // 转换流信息写出
        FastByteArrayOutputStream os = new FastByteArrayOutputStream();
        try {
            ImageIO.write(image, "jpg", os);
        } catch (IOException e) {
            return R.fail(e.getMessage());
        }
        Map<String, Object> map = new HashMap<>();

        map.put("uuid", uuid);
        map.put("img", Base64.encode(os.toByteArray()));
        return map;
    }
}
